Abstract Elemental iron (Fe0), is a versatile reactive agent for various water treatment. Due to the inexpensiveness while wide-ranging removal capabilities, the technology of Fe0-based filtration is used in permeable reactive barriers and in safe drinking water provision. Because of the expansive iron corrosion, mixing Fe0 with an non expansive material (e.g. activated carbon, sand, etc) is a prerequisite for long term efficiency. The design of Fe0 filtration was theoretically addressed recen.
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